A damage localization method based on the 'jerk energy'

Yonghui An, Hongki Jo, B. F. Spencer, Jinping Ou

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

This paper proposes two damage localization procedures that are based on the difference in the curvature of the response 'jerk energy'. The efficacy of the proposed approaches is validated using several numerical and experimental examples, as well as compared with a previously reported damage localization method based on the fractal dimension of the response. First, a 10 degree-of-freedom mass-spring-damper system is considered to provide clear numerical validation and comparison. Single and multiple damage cases with different levels of stiffness loss, different noise levels, and different locations are considered. Then, the proposed jerk energy-based approach is experimentally validated using a laboratory-scale six-story shear building model. Both the experimental and numerical results indicate that both the presented procedures can locate damage effectively; moreover, they perform well in the presence of noise and are model free, which provides a good foundation for engineering applications.

Original languageEnglish (US)
Article number025020
JournalSmart Materials and Structures
Volume23
Issue number2
DOIs
StatePublished - Feb 1 2014

Keywords

  • curvature
  • damage localization
  • energy
  • jerk
  • mass-spring-damper system
  • shear building model

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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